MESON Chess Problem Database

Problem Display
PID: 272223 (8/1Qnp2NB/n2p4/3r4/3kP3/2R5/1PP2K1B/8 w - - 0 1)

Wright Wood, S (= Wood, SW)

The Problemist, 1957

8/1Qnp2NB/n2p4/3r4/3kP3/2R5/1PP2K1B/8

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5+
      • 2.Sxf5#
    • 1...Sb4
      • 2.Qxb4#
    • 1...Sc5
      • 2.Qb4#
    • 1...Sb8
      • 2.Qb4#
    • 1...Sb5
      • 2.Qxd5#
    • 1...Se6
      • 2.Qxd5#
    • 1...Sa8
      • 2.Qxd5#
    • 1...Se8
      • 2.Qxd5#
  • Tries
    • 1.Sf5+?
      • 1...Kxe4
        • 2.Re3#
        • 2.Rc4#
      • 1...Rxf5+!
    • 1.Se6+?
      • 1...Sxe6
        • 2.Qxd5#
      • 1...dxe6!
    • 1.Qb3?
      • threat
        • 2.Rc4#
        • 2.Qc4#
      • 1...Rc5
        • 2.Rd3#
      • 1...Rf5+!
    • 1.Qb6+?
      • 1...Sc5
        • 2.Qb4#
      • 1...Rc5!
  • Keys
    • 1.Bg8!
      • 1...Rf5+
        • 2.Sxf5#
      • 1...Kxe4
        • 2.Rc4#
      • 1...Ra5
        • 2.Rc4#
      • 1...Rb5
        • 2.Rc4#
      • 1...Rc5
        • 2.Rd3#
      • 1...Re5
        • 2.Rc4#
      • 1...Rg5
        • 2.Rc4#
      • 1...Rh5
        • 2.Rc4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sc5
        • 2.Qb4#
      • 1...Sb8
        • 2.Qb4#
      • 1...Sb5
        • 2.Qxd5#
      • 1...Se6
        • 2.Qxd5#
      • 1...Sa8
        • 2.Qxd5#
      • 1...Se8
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(b);CHECK,N_GUARD::S(H),XR(b)
    • S(c);N_GUARD::QAR2(G),XS(c)
    • S(c);N_GUARD::QAR2(G)
    • S(e);N_GUARD::QAR1(G),XR(b)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • R(b);CHECK,XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • S(e);XS(H)::QAR1(G),XR(b)
      • Refutation
        • P(f);XS(H)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);SBLOCK::R1(E)
      • Refutation
        • R(b);CHECK
    • Try
      • Q(G);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR2(G)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • B(I);
    • Vars
      • R(b);CHECK,N_GUARD::S(H),XR(b)
      • K(a);N_GUARD,P-FLIGHT,P_SPINR(b),XP(F)::R(E)
      • R(b);::R1(E)
      • R(b);SBLOCK::R1(E)
      • S(c);N_GUARD::QAR2(G),XS(c)
      • S(c);N_GUARD::QAR2(G)
      • S(e);N_GUARD::QAR1(G),XR(b)
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